[OASIS Issue Tracker] Commented: (OFFICE-2227) XNPV: more detailsneeded

[ http://tools.oasis-open.org/issues/browse/OFFICE-2227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17503#action_17503 ] 

Eric Patterson commented on OFFICE-2227:
----------------------------------------

I have send a proposed solution to the mailing list.

> XNPV: more details needed
> -------------------------
>
>                 Key: OFFICE-2227
>                 URL: http://tools.oasis-open.org/issues/browse/OFFICE-2227
>             Project: OASIS Open Document Format for Office Applications (OpenDocument) TC
>          Issue Type: Sub-task
>          Components: OpenFormula
>    Affects Versions: ODF 1.2
>            Reporter: Eike Rathke
>            Assignee: Eric Patterson
>             Fix For: ODF 1.2
>
>
> Broken out from OFFICE-916
> XNPV
> - Excel documentation gives the formula. It's based on 365 days only. They've
>   missed out a minus sign. More detail is required to define this function. 
> [ed:] TODO: who can provide insight?
> - Excel's help also seems to have an error - I don't think it is *necessary*
>   to have a negative entry - first entry could be a payment. The day count
>   appears to be the actual day count (366 in a leap year).
> [ed:] TODO: who can provide insight?

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